how to fix error code P0455 on my Toyota Camry XV70 (2018-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.

2. Inspect and Replace Gas Cap

• Sub-steps:
  • Remove the existing gas cap and inspect for cracks or wear.
  • If damaged, replace it with a new OEM gas cap.
  • Tighten the new gas cap until it clicks to ensure a proper seal.

3. Inspect and Repair EVAP Hoses

• Sub-steps:
  • Locate the EVAP hoses connected to the charcoal canister and purge valve.
  • Use a flashlight to visually inspect for cracks, cuts, or loose connections.
  • Replace any damaged hoses with OEM replacements, securing all connections tightly.

4. Smoke Test EVAP System

• Sub-steps:
  • Connect a smoke machine to the EVAP service port.
  • Activate the smoke machine and look for smoke escaping from any leaks.
  • If smoke is detected, repair the identified leak areas.

5. Test and Replace Purge and Vent Valves

• Sub-steps:
  • Disconnect the electrical connectors from the purge and vent valves.
  • Use a multimeter to test for electrical continuity and operation.
  • If faulty, replace the purge valve and/or vent valve with OEM parts.

6. Reset the Check Engine Light

• Sub-steps:
  • Use the OBD-II scanner to clear the P0455 error code.
  • Start the engine and let it run for a few minutes.

Tools Required:

• OBD-II scanner
• Multimeter
• Smoke machine
• Socket set
• Screwdrivers

Parts Required:

• OEM gas cap
• EVAP hoses (if damaged)
• Purge valve (if faulty)
• Vent valve (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical components.
• Work in a well-ventilated area when performing a smoke test to avoid inhalation of smoke.